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Thread: YZ 490 Long Rod on Tri-z

  1. 10-19-2011, 04:38 PM #1
    Just-Tri-It's Avatar
    Just-Tri-It
    Just-Tri-It is offline Just Too Addicted Arm chair racerJust too addicted
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    YZ 490 Long Rod on Tri-z

    What are the advantages and disadvantages to the long rod on the Z?
    Just-Tri-It

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  2. 10-20-2011, 06:08 PM #2
    El Camexican's Avatar
    El Camexican
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    Read this. It should help explain.

    http://www.stahlheaders.com/Lit_Rod%20Length.htm
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  3. 10-21-2011, 01:05 AM #3
    cr480r's Avatar
    cr480r
    cr480r is offline Power User Got the holeshot
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    In addition to changes in rod angularity and piston dwell time, rod length can also affect crankcase volume. Case volume is added if a spacer plate is used.
    2-stroke lover
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  4. 10-21-2011, 09:44 AM #4
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    True, I think the link I sent was directed towards 4 strokes. I'm not sure how the volume effects that engine. The few things I've read about 2 stroke case volume seems to indicate that less is better on most engines if the quest is for top end.
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